Nut-lock.



PATENTBD JULY 30, 1907.

G. D. LOGAN.

NUT LOCK.

APPLICATION FILED mm. 12. 190g.

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CRAWFORD D. LOGAN, OF COAL HILL, ARKANSAS, ASSIGNOR OF ONE-THIRD TO DAVID M. HUNT, OF GOAL HILL, ARKANSAS, AND ONE-THIRD TO JOSEPH R. BROWN, OF VAN BUREN,

ARKANSAS.

NUT-LOCK.

Specification of Letters Patent.

Patented July 30, 1907,

Application filed June 12, 1 1906. Serial No. 321,400.

To all whom it may concern:

fication The invention relates to improvements in nut locksv The object of the present invention is to improve the construction of nut locks, and to provide a simple, inexpensive and eflicient one designed particularly for use in rail joints and adapted to securely lock a nut against accidental rotation, and capable of enabling a nut to be readily rotated by a wrench for screwing the nut on or off a bolt.

With these and other objects in view, the invention consists in the construction and novel combination of parts hereinafter fullydescribed, illustrated in the accompanying drawing, and pointed out in the claims: hereto appended; it being understood that various? changes in the form, proportion, size and minor details of construction, within the scope of the claims;

may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawingz Figure 1 is a perspective view of a rail joint provided with a nut lock constructed in accordance with this invention. Fig. 2 is a horizontal sectional view of the same. Fig. 3 is a detail perspective view of one of the nuts. Fig. his a detail sectional view, illustrating the construction of the extension of the nut.

Like numerals of reference designate corresponding parts in all the figures of the drawing.

1 designates a nut, which is provided in advance of its polygonal wrench-receiving body portion with a circular extension 2, surrounding the bolt opening 3 of the nut, and provided with hearing sockets or recesses 4, arranged in pairs and corresponding to the faces of the nut, and adapted to receive pivots 5 of a locking device 6. The nut shown in the drawing is rectangular, but the improvements are applicable to other forms of nuts as will be apparent.

The locking device consists of a spring constructed of steel, or other suitable material, and composed of parallel vertical sides or clamping portions 7 and a substantially horizontal oblong loop 8, forming a head and extending laterally beyond the lower terminals of the sides 7. The loop 8 constitutes an outer connect ing portion and consists of a straight transverse portion and partial spring coils, located at the ends of the transverse portion, and connecting the same with the sides 7 and increasing the resiliency and the clamping action thereof. The upper terminals of the sides are bent l inwardly at right angles to form the terminal pivots 5,

and the latter are maintained in the bearing recesses or sockets of the cylindrical extension of the nut by the resiliency of the locking device. The locking device, which extends downward from the horizontal diame ter of the circular or cylindrical extension of the nut is detachable to engage the bottom flange 9 of a fish plate 10, as clearly shown in Fig. 1 of the drawing. In Figs. 1. and 2 of the drawing, the nut lock is shown applied to bolts 11 of a rail joint. The bolts 1] pierce the fish plates 10 and 12 and the webs of the rails 13, and the bottom flange 9 of the fish plate 10 forms a stop to be engaged by the locking devices of the nuts.

The cylindrical extension 2 is provided with an exterior annular groove 14, which forms an outer shoulder and which receives the sides 7 of the locking device, whereby the locking device is interlocked with the nut below the pivots 5, and is securely held in engagement with the bottom flange of the rail. The pivots of the sides of the locking device permit the device to swing upward out of engagement with the bottom flange 9 of the fish plate 10, and the cylindrical extension is provided with peripheral notches or recesses 15, which are adapted to receive the sides of the resilient locking device, whereby the said locking device is interlocked with the extension and is maintained in the extended position shown at the left hand side of Fig. 2 of the drawing. This will prevent the locking device from interfering with the rotation of the nut, and will hold the locking device out of the way, so as not to interfere with the free use of a wrench. The cylindrical extension and the locking spring are located beyond the polygonal wrench-receiving body portion of the nut, and do not interfere with the free use of the wrench on all the faces of the nut.

Although the nut lock in the accompanying drawing is shown applied to a rail joint, yet it will be apparent that it may be advantageously employed on machines and various structures subject to vibration, and that, as the bearing sockets 4 are arranged to correspond with each of the wrench receiving faces of the nut, the

.locking device may be arranged for locking any faces with a nut, and a stop located beyond the nut, of a locking device pivotally connected with the nut and arranged to swing into and out of engagement with the stop, and means for interlocking the locking device with the nut between the pivotal point and the stop to hold the locking device in engagement with the said nut,

3. A device of the class described comprising a nut, a locking device pivotally connected with the nut and provided with exterior means for engaging a stop to hold the nut against rotary movement and adapted to swing into and out of engagement with the said stop, and means for interlocking the locking device with the nut at an intermediate point between the pivotal point and the said engaging means for holding the locking device out of engagement with the stop. I

4. A device of the class described comprising a nut, a locking device pivotally connected with the nut and adapted to swing into and out of engagement with a stop, means for interlocking the locking device with the nut for maintaining the locking device in its engaging position, and separate means for interlocking the locking device with the nut for holding the former out of engagement with the stop.

5. A device of the class described comprising a nut, and a pivoted resilient locking device provided with exterior means for engaging a stop to hold the nut against rotary movement and having clamping portions located between the pivotal point and the said engaging means for engaging the nut, whereby the locking device is maintained in andout of its engaging position.

6. A device of the class described comprising a nut provided with an extension having bearing recesses or sockets arranged in pairs and corresponding with the wrench receiving faces of the nut, and a resilient locking device provided with opposite sides having terminal pivots engaging the bearing recesses or sockets, said sides being resilient to permit the pivots to be sprung out of the recesses or sockets, and the pivots being adapted to be arranged in any pair of the recesses or sockets.

7.- A device of the class described comprising a nut having an extension provided with an exterior groove, and a pivoted locking device mounted on the extension and provided with exteriorly arranged means for engaging a stop 8. A device of the class described comprising a nut having an extension provided with an exterior groove, and a pivoted locking device mounted on the extension and provided with exteriorly arranged means for engaging a stop to hold the nut against rotary movement and having resilient clamping sides arranged to interlock with the groove.

9. A device of the class described comprising a nut, and a locking device composed of resilient sides pivoted at their inner ends to the nut and engaging the same beyond the pivotal point to hold the locking device against swinging, and a connecting portion located at the outer ends of the sides and arranged to engage a stop for locking the nut against rotary movement.

10. A device of the class described comprising a nut, and a locking device composed of resilient clamping sides pivoted at their inner ends to the nut and engaging the same to hold the locking device against swinging, and a connecting portion located at the outer ends of the sides and arranged to engage a stop for locking the nut against rotary movement, said connecting portion being provided with partialspring coils to increase the resiliency and clamping action of the sides.

11. A device of the class described comprising a nut provided with a cylindrical extension having an annular groove and provided with peripheral notches, and a locking device composed of resilient sides pivoted at their inner ends to the extension and arranged to engage either the groove or the notches to prevent the locking device from swinging inwardly or outwardly, and a connecting portion located at the outer ends of the sides and arranged to engage a stop for locking the nut against rotary movement.

12. A device of the class described comprising a nut provided with an extension, and a resilient locking device composed of sides having terminal pivots mounted on the extension, and a loop connecting the sides and forming a head for epgaging a stop, said loop being extended beyond the said sides.

In testimony, that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

CRAWFORD D. LOGAN.

Witnesses:

.S. H. LOGAN, C. E. QUICK. 

